Nanocellulose/Fullerene Hybrid Films Assembled at the Air/Water Interface as Promising Functional Materials for Photo-electrocatalysis
| Autor: | Tatiana Da Ros, Ludovico Valli, Alessandra Operamolla, Francesco Milano, Paola Semeraro, Livia Giotta, Maria Rachele Guascito, Shadi Sawalha, Maurizio Prato |
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| Přispěvatelé: | Milano, Francesco, Guascito, Maria Rachele, Semeraro, Paola, Sawalha, Shadi, Da Ros, Tatiana, Operamolla, Alessandra, Giotta, Livia, Prato, Maurizio, Valli, Ludovico, Milano, F., Guascito, M. R., Semeraro, P., Sawalha, S., Da Ros, T., Operamolla, A., Giotta, L., Prato, M., Valli, L. |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Fullerene Polymers and Plastics Supramolecular chemistry Electrocatalyst photocurrent Article Nanocellulose Nanomaterials lcsh:QD241-441 Photocatalysi lcsh:Organic chemistry Phase (matter) cellulose nanocrystal cellulose nanocrystals Langmuir-Schäfer deposition fullerene fulleropyrrolidine voltammetry photocatalysis Cationic polymerization General Chemistry Chemical engineering Photocatalysis Cellulose nanocrystals Fulleropyrrolidine Photocurrent Voltammetry |
| Zdroj: | Polymers, Vol 13, Iss 243, p 243 (2021) Polymers (Basel) 13 (2021): 1–17. doi:10.3390/polym13020243 info:cnr-pdr/source/autori:Milano F.; Guascito M.R.; Semeraro P.; Sawalha S.; Da Ros T.; Operamolla A.; Giotta L.; Prato M.; Valli L./titolo:Nanocellulose%2Ffullerene hybrid films assembled at the air%2Fwater interface as promising functional materials for photo-electrocatalysis/doi:10.3390%2Fpolym13020243/rivista:Polymers (Basel)/anno:2021/pagina_da:1/pagina_a:17/intervallo_pagine:1–17/volume:13 Polymers Volume 13 Issue 2 |
| Popis: | Cellulose nanomaterials have been widely investigated in the last decade, unveiling attractive properties for emerging applications. The ability of sulfated cellulose nanocrystals (CNCs) to guide the supramolecular organization of amphiphilic fullerene derivatives at the air/water interface has been recently highlighted. Here, we further investigated the assembly of Langmuir hybrid films that are based on the electrostatic interaction between cationic fulleropyrrolidines deposited at the air/water interface and anionic CNCs dispersed in the subphase, assessing the influence of additional negatively charged species that are dissolved in the water phase. By means of isotherm acquisition and spectroscopic measurements, we demonstrated that a tetra-sulfonated porphyrin, which was introduced in the subphase as anionic competitor, strongly inhibited the binding of CNCs to the floating fullerene layer. Nevertheless, despite the strong inhibition by anionic molecules, the mutual interaction between fulleropyrrolidines at the interface and the CNCs led to the assembly of robust hybrid films, which could be efficiently transferred onto solid substrates. Interestingly, ITO-electrodes that were modified with five-layer hybrid films exhibited enhanced electrical capacitance and produced anodic photocurrents at 0.4 V vs Ag/AgCl, whose intensity (230 nA/cm2) proved to be four times higher than the one that was observed with the sole fullerene derivative (60 nA/cm2). |
| Databáze: | OpenAIRE |
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